PT-2013-3871 · Digium · Asterisk

Matt Jordan + 2 · Published 2013-03-29 · Updated 2013-04-02 · CVE-2013-2685

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions Asterisk Open Source versions prior to 11.2.2

Description The issue is related to a stack-based buffer overflow in the res/res format attr h264.c file, which allows remote attackers to execute arbitrary code via a long sprop-parameter-sets H.264 media attribute in a SIP Session Description Protocol (SDP) header.

Recommendations For versions prior to 11.2.2, update to version 11.2.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the res/res format attr h264.c file or limiting the length of the sprop-parameter-sets H.264 media attribute in SIP SDP headers to minimize the risk of exploitation.

Fix

RCE

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2013-2685

Affected Products

Asterisk

References · 4

• https://issues.asterisk.org/jira/browse/ASTERISK-20901 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2013-2685 · Security Note
• http://downloads.asterisk.org/pub/security/AST-2013-001.html · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2685 · Note